Portable traction-crane



PATENTED FEB! Le, 1904-. P. E. SMITH. Y PORTABLE 'TRAGTIo-N CRANE.

APPLICATION FILED' we. 1s, 190e'.

No MODEL.

SHEETS-snm' 1.

wmv..

ATTORNEY Tm: Munras Parties cq. WQ'Yum'HaDWASHMBmN. D, L.;

No; 762,363. PATENTBD FEBg-ls, 1904.v

P. B SMITH.

PORTABLE TRAGTION CRANE.

. APPLICATION FILED AUG-[13, 1903.

N0 MODEL. 3 SHEETS-SHEET 2.

mais.

"wn'Nassr-:s @am I @06 mf l I NvaN-ron .@Mf Ma' eYn/Afwwf ATTGRNEY No.752,363. I "PATENTED IElm, 1904.

F. E. SMITH.

APORTABLE TRAGTION CRANE.

APPLIUATIONAFILED AUG, 13, 1903.

N0 MODEL. 3 SHEETS-SHEET 3.

wc nanars .rxRs co. mom-urna.. wnsmumum u c..

.UNTTED STATES Patented February 16, 1904.

PATENT A OFFICE.

FREDERIC E. SMITH, OF FRANKLIN, PENNSYLVANIA. i

PORTABLE TRACTlON-CRAN E.

'SPECIFICATION forming part of Letters Patent No. 752,363, datedFebruary 16, 1904.

Application filed August 13, 1903.

T0 a/ZZ whom, t may concern:

Be it known that I, FREDERIC E. SMITH, a citizen of the United States,residing at Franklin, in the county of Venango and State ofPennsylvania, have invented certain new and useful Improvements inPortable Traction- Cranes, of which the following is a specification,reference being had therein to the accompanying drawings. Y

My invention relates to an improved port-V able traction-crane and willbe fully understood by a reference to the accompanying drawings, whichVform a part of this speciiication, and in whichV Figure 1 isV a rearelevation of said crane. Fig. 2 is a side elevation. 'Fig 3 is a sideview of the hoisting and traction gearing, the bed being shown insection on line .fr of Fig. 5 and with the standards removed for 'thepurpose of showing said gearing more'clearly. Fig. 4 is a frontelevation ofthe hoisting and traction gearing stripped of its housingorsurrounding framework. The steering-wheel and shaft at the rightside ofsaidview are removed to expose other parts to view. Fig. 5

is a plan view of the bed. Fig. 6 is a view of the under side of thebed. t

The same reference characters indicate identical parts in the severalviews.

The object of my invention is to provide a portable crane wherein thehoisting andtraction mechanism shall be operated by a motor of theinternal-combustion type, said motor to be so adapted that either thehoisting or traction gear may be thrown into engagement with andoperated thereby or both may be disengaged therefrom and remainstationary while the motor is operated, and as a precautionar;r orsafety provision the engaging and djsengaging mechanism of the hoistingand traction gearing are so connected that both the hoisting andtraction gearing cannot become operative at the same time.

In general terms my device consists of a platform or bed havingtraction-gearing mounted therein and jib-standards mounted upon saidbed, with hoisting mechanism mounted therein, all of which gearing isoperated or actuated by one motor. Y

This general description will be seen to be Serial No. 169,321. (Nomodel.)

equally applicable to the device shown and detially as follows: In therear end of bed 1 are mounted' the traction-wheels 2 upon the axle 3,and in the front end of said bed in the extremity of the bifurcationsare mounted the steering-Wheels 4. Extending upwardly from said bed aretwo jib-standards 5 and 5', which at their lower end are extendedrearward, forming brackets 6, upon which is mounted aninternal-combustion motor v7. A drum Sis mounted between said standards5 5', upon y ,I

which the hoisting-cable 9 is wound.

Upon the motor-shaft is mounted a bevel-v gear4 10, and meshingtherewith and diametrical'ly vertically opposed to each other are the,two bevel-gears 11 12, revolubly mounted upon the vertical shaft 13.Thus mounted it will be readily understood that gears 11 and 12 revolvein opposite directions.

Upon the juxtaposed faces lof gears 11 12 are formed clutch-teeth 14,adapted to be engaged by the teeth upon clutch 15, which'clutch 15 isslidingly (but not revolubly) mounted upon shaft 13. When clutch 15 isdisengaged from the clutch-teeth 14 of gears 11 12, shaft 13 does notrevolve, and when clutch l5 is in engagement with either gear 11 12shaft 13 is caused to revolve, and by shifting the engagement of saidclutch 15 from one gear 11 12 to the other the motion of said shaft 13is reversed.

' Revolubly mounted upon the lower end of shaft 13 is a pinion 16,having clutch-teeth 17 upon the upper face thereof. Slidingly mountedabove said pinion 16 is a clutch 18, adapted to be engaged with anddisengaged from the teeth upon pinion 16.

Mounted upon the under side of bed 1 is a I gear 19, adapted to meshwith and be driven IOO by pinion 16. Rigidly aliixed to the under sideof gear 19 is a bevel-pinion 20,which is adapted to mesh with and drivea bevel-gear 21, rigidly mounted upon axle 3, and whereby motion istransmitted to the traction-wheels 2.

To the hoisting-drum 8 is rigidly afixed a worm-gear 22, adapted to meshwith and be driven by worm 23, which is revolubly mounted upon shaft 24.

Upon the lower end of worm 23 are formed clutch-teeth adapted to beengaged by the teeth upon the clutch 25,` which is slidingly mountedupon shaft 24.

26, 27, 28, and 29 are transmitting-gear ing whereby motion istransmitted from shaft 13 to shaft 24.

A lever 30is the means by which clutches 18 and 25 are operated, thelever 30 being attached to lever 31 by means of the connecting-rod 32,(which is broken away in Fig. 3 in order to expose other parts to view.)

Lever 31 is a compound lever fulcrumed at d, with a joint at a', whichconstruction is employed for the purpose of causing clutches 18 and 25to travel in the same direction simultaneously or so that when oneclutch is caused to engage the other is simultaneously caused todisengage from its work. This construction is a precautionary measureand is employed for the sake of safety, for if while raising a heavyload upon the hoisting-tackleA the traction mechanism should becomeoperative and the crane thus made to travel in either direction damageand accidents might result.

For the purpose of operating clutch 15 a lever 33 is provided and isconnected to the clutch-fork 34 by means of the connectingrod 35.

Motor 7 is an internal-combustion motor of any suitable type,vpreferably employing naphtha as fuel.

36 is a fuel-tank.

37 is a carbureter.

38 is a water-tank and is connected to the jacket of the cylinder of themotor for cooling purposes.

A steering-wheel 4 is pivotally mounted in the extremity of each of thebifurcations of the bed 1, (as will be readily understood from aninspection of Fig. 6,).and the housing or bracket of said wheel 4 isprovided with a sprocket-wheel 39, about which passes a chain 40,passing back and about an actuatingsprocket 41', which said sprocket 41is driven by the worm 42 and gear 43.

- W'orm 42 is mounted upon shaft 44, which has rigidly mounted thereon amiter-gear 45, to which gear 45 and its shaft 44 motion is imparted bythe gear 46, mounted upon the shaft 47 of the steering-wheel 48.

It will be readily seen that the operatinglevers and steering-gear arereadily accessible from the platform 49, upon which the operator stands.L

Having thus described my device, what I claim as new, and desire tosecure by Letters l Patent, is-

1. In a portable traction-crane, a bed of general Y-shaped conformation,steering-wheels mounted in each of the bifurcations thereof,

" and means of actuating said steeringwheels from the operatorsplatform.

2.` In a portable traction-crane. a bed, traction mechanism mountedthereon, vertical jib.

standards mounted upon said bed, hoisting mechanism mounted upon saidstandards, a motor mounted upon said standards, a bevelgear mounted uponthe shaft of said motor, meshing with and adapted to drive twodiametrically opposed bevel gears, revolubly mounted upon a shaft whichcommunicates with the hoisting and traction mechanism, and means ofplacing said shaft into operable engagement with either of saidlast-mentioned gears, substantially as and for the purpose set forth. l

3. In a portable traction-crane a bed of general Y-shaped conformation,traction-Wheels mounted beneath the body of said bed, a steering-wheelmounted in the extremity of each of the bifurcations; j ib-standardsmounted upon said bed, hoisting mechanism mounted upon said standards,in combination with a motor adapted to operate said traction andhoisting mechanism.

In testimony whereof I ax my signature in presence of two witnesses.

VFREDERIC E. sMiTH.

Witnesses:

E111). SMITH, J. F. HUNT.

